The sentences given below, when properly sequenced, would yield a coherent paragraph. Decide on the proper sequencing of the order of the sentences and key in the sequence of the numbers as your answer.
- Veena Sahajwalla, a materials scientist at the University of New South Wales, believes there is a new way of solving this problem.
- Her vision is for automated drones and robots to pick out components, put them into a small furnace and smelt them at specific temperatures to extract the metals one by one before they are sent off to manufacturers for reuse.
- E-waste contains huge quantities of valuable metals, ceramics and plastics that could be salvaged and recycled, although currently not enough of it is.
- She plans to build microfactories that can tease apart the tangle of materials in mobile phones, computers and other e-waste.
The sentences given below, when properly sequenced, would yield a coherent paragraph. Decide on the proper sequencing of the order of the sentences and key in the sequence of the numbers as your answer.
- Veena Sahajwalla, a materials scientist at the University of New South Wales, believes there is a new way of solving this problem.
- Her vision is for automated drones and robots to pick out components, put them into a small furnace and smelt them at specific temperatures to extract the metals one by one before they are sent off to manufacturers for reuse.
- E-waste contains huge quantities of valuable metals, ceramics and plastics that could be salvaged and recycled, although currently not enough of it is.
- She plans to build microfactories that can tease apart the tangle of materials in mobile phones, computers and other e-waste.
Entered answer:
Solution
Step 1: Find the opening sentence -> Look for context-setting, problem introduction
Step 2: Find the connecting sentences -> Person/solution introduction
Step 3: Find the development -> General plan details
Step 4: Find the conclusion -> Specific implementation details
From passage: "E-waste contains huge quantities of valuable metals... although currently not enough of it is."
This sentence sets up the problem -> E-waste has value but isn't being recycled enough. Perfect opening.
From passage: "Veena Sahajwalla... believes there is a new way of solving this problem."
The word "this problem" directly refers back -> Must come after sentence 3. Introduces our solution person.
Thought Process:
Problem introduction (3) -> Solution person (1) -> General plan (4) -> Specific details (2)
Sentence 3 -> introduces the e-waste recycling problem
Sentence 1 -> introduces Veena as having a new solution to "this problem"
Sentence 4 -> explains her general plan (microfactories)
Sentence 2 -> gives specific details of how it works (drones, robots, furnaces)
The key is spotting reference words:
- "this problem" in sentence 1 -> needs a problem mentioned before it
- "She plans" in sentence 4 -> needs Veena introduced first
- "Her vision" in sentence 2 -> needs her plan mentioned first
Correct sequence: 3142
The flow goes: Context -> Expert -> Plan -> Details